| 摘要 |
PURPOSE:To obtain a high performance rotational speed controller for a motor in which the impact drop can be reduced by controlling the armature current corresponding to the load torque based on an estimated load torque and a rotational speed detection signal. CONSTITUTION:The rotational controller for a motor comprises a major loop for detecting a rotational speed signal N and obtaining an armature current command signal Iaref based on the rotational speed detection signal N and a rotational speed command signal Nref, and a minor loop for operating a current signal based on an estimated load torque while imparting a primary lag through a primary lag element 21 and adding/subtracting the current signal to/from the armature current command signal. This constitution reduces the impact drop of rotational speed significantly. |
